Global patent index - EP 0988909 A1

EP 0988909 A1 2000-03-29 - Low pressure bottom casting device for casting metals, especially light metals

Title (en)

Low pressure bottom casting device for casting metals, especially light metals

Title (de)

Vorrichtung zum steigenden Niederdruck-Giessen von Metallen, insbesondere Leichtmetallen

Title (fr)

Dispositif de coulée de fond à faible pression pour la coulée de métaux, en particulier de métaux légers

Publication

EP 0988909 A1 (DE)

Application

EP 99117642 A

Priority

DE 19843285 A

Abstract (en)

Apparatus for the low pressure casting of metals has a casting channel (13) between the in-gate (12) and the mold hollow space (9) at an angle to the in-gate. A vent plug (17) is formed as a sand mold body and is pushed into a guide (15) of the mold (5) between an open and closed position, in which it closes the casting channel and the metallostatic pressure of the melt in the mold acts on the plug vertical to the guide. Apparatus for the low pressure casting of metals in divided sand molds (5, 6, 7) comprises an in-gate (12) in one of the two molds (7), to which the casting pipe (4) of a melt container (3) is connected, and is joined to the lowest region of the mold hollow chamber (9), and a vent plug (17) integrated into the mold that can be moved into the closed position with the aid of an external drive (19) after the mold has been filled. A casting channel (13) is provided between the in-gate (12) and the mold hollow space (9) at an angle to the in-gate. A vent plug (17) is formed as a sand mold body and is pushed into a guide (15) of the mold (5) between an open and closed position, in which it closes the casting channel and the metallostatic pressure of the melt in the mold acts on the plug vertical to the guide.

Abstract (de)

Bei einer Vorrichtung zum steigenden Niederdruck-Gießen von Metallen in geteilten Sandformen (6,7) mit einem Einguß (12) in einer der beiden Formen, an den das Gießrohr (4) eines Schmelzebehälters (3) anschließbar ist und der mit dem tiefsten Bereich des Formhohlraums (9) in Verbindung steht, und mit einem in die Form integrierten Verschlußstopfen (17) der nach dem Füllen des Formhohlraums mittels eines externen, in die Form eingreifenden Antriebs (19) in die Schließstellung bringbar ist, wird ein einwandfreier Verschluß ohne Beeinträchtigung der Gußqualität und der Formsandaufbereitung dadurch verwirklicht, daß zwischen dem Einguß und dem Formhohlraum ein diese verbindender Gießkanal (13) winklig zu dem Einguß angeordnet ist, und daß der Verschlußstopfen als Sandformkörper ausgebildet und in einer eingeformten Führung (15) der Form zwischen einer Öffnungslage und einer Schließlage, in der er den Gießkanal verschließt und der metallostatische Druck der Schmelze in der Form senkrecht zur Führung auf den Verschlußstopfen wirkt, verschiebbar ist.

IPC 1-7 (main, further and additional classification)

B22D 18/04

IPC 8 full level (invention and additional information)

B22D 18/04 (2006.01)

CPC (invention and additional information)

B22D 18/04 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

DE 19843285 A1 20000323; AT 245072 T 20030815; EP 0988909 A1 20000329; EP 0988909 B1 20030716; JP 2000094116 A 20000404; US 6460603 B1 20021008

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